Granted Patent
Utility
US 6,357,671 · App. 09/489,835
Ultrasonic nebulizer
Inventor:
Göran Cewers
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Jan 24, 2000
Inventor
Göran Cewers
Assignee (at issue)
Siemens Elema AB
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.